According to a survey from Sterne Agee, using SurveyMonkey, 77 percent of surveyed Facebook users hadn’t noticed mobile ads during the span of a week, indicating that Facebook is succeeding at keeping its mobile Sponsored Stories subtle enough to fly under the radar. The survey also found that just 16 percent of respondents aid they had a desire to pay to promote posts on Facebook. Meanwhile, 47 percent of respondents said they’d be willing to try a Facebook search engine. “While the near-term outlook on Facebook remains cloudy given the ongoing transition to mobile, we continue to believe the long-term opportunity is large,” Sterne Agee concluded. (AllFacebook)